<!DOCTYPE html>
<html lang="en">

  <head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>渲染图片案例</title>
    <style>
    * {
      margin: 0;
      padding: 0;
    }

    li {
      list-style: none;
    }

    .box {
      display: flex;
      flex-wrap: wrap;
      width: 540px;
      margin: 20px auto;
    }



    .box li {
      width: 100px;
      height: 100px;
      margin: 0 10px 10px 0;
    }

    .box li:nth-child(5n+1) {
      margin-right: 0;
    }

    .box li img {
      width: 100%;
      height: 100%;
      border: 2px solid #258DF2;
      border-radius: 10px 0 10px 0;
    }
  </style>
  </head>

  <body>
    <ul class="box">
      <script>
      let arr =[
      './images/1.webp',
      './images/2.webp',
      './images/3.webp',
      './images/4.webp',
      './images/5.webp',
      './images/6.webp',
      './images/7.webp',
      './images/8.webp',
      './images/9.webp',
      './images/10.webp',
      './images/11.webp',
      './images/12.webp',
      './images/13.webp',
      './images/14.webp',
      './images/15.webp',
      './images/16.webp',
      './images/17.webp',
      './images/18.webp',
      './images/19.webp',
      './images/20.webp',
    ]
      let hero = prompt('请选择您要购买的英雄数量：')
      let img = ''
      for (let i=0; i < hero;i++){
        img += `<li><img src="${arr[i]}" alt=""></li>`
      }
      document.write(`${img}`)
    </script>
    </ul>
  </body>

</html>